Here are some drawings of the new two person "deep flight" submarine being manufactured by Hawkes Ocean Technologies for the Falcon. The sub is a new concept designed to "fly" under water, similar to the way a jet airplane flies in the air. The sub does not have ballast tanks, but dives because of its forward speed---like a penguin does when it hunts.
The sub will have an operating depth of 400 feet, a speed of 5 knots and an underwater time of roughly 4 hours on a single battery charge. Like the airplane it will do rolls, loops and can "porpoise" when it surfaces (the speed in a power ascent can exceed 10 knots).
The Falcon's sub is a development of an earlier prototype by Graham Hawkes and when completed, it will be the first of its kind. We plan to use it extensively in the Pacific next year.
